#define SPEED_R 3 
#define DIR_L 4 
#define SPEED_L 5 
#define DIR_R 2 





void setup()
{
pinMode (DIR_L, OUTPUT);
pinMode (SPEED_L, OUTPUT);
pinMode (DIR_R, OUTPUT); 
pinMode (SPEED_R, OUTPUT);
}


void loop()
{
digitalWrite (DIR_R, HIGH); 
digitalWrite (SPEED_R, HIGH); 
digitalWrite (DIR_L, HIGH);
digitalWrite (SPEED_L, HIGH);
delay(2000); 

digitalWrite (DIR_R, HIGH);
digitalWrite (SPEED_R, HIGH);
digitalWrite (DIR_L, HIGH);
digitalWrite (SPEED_L, LOW);
delay(1500); 


digitalWrite (DIR_R, HIGH);
digitalWrite (SPEED_R, HIGH);
digitalWrite (DIR_L, HIGH);
digitalWrite (SPEED_L, HIGH);
delay(1000); 


digitalWrite (DIR_R, HIGH);
digitalWrite (SPEED_R, LOW);
digitalWrite (DIR_L, HIGH);
digitalWrite (SPEED_L, HIGH);
delay(1000); 
}
